error in Java files

When I try to compile Java classes that have package statements in it, I get an error because it is not properly stored in the proper packages as named in the package statement. When I install these classes into their appropriate packages, is it supposed to be correct or is there anything else I have to do to set the packages properly or configure anything else in those Java files?

Your question is not clear!! any way, before importing the package make sure your calling class is stored on that package[Folder] or not.